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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 10 — May. 15, 1998
  • pp: 739–741

Use of error diffusion with space-variant optimized weights to obtain high-quality quantized images and holograms

Frank Fetthauer and Olof Bryngdahl  »View Author Affiliations


Optics Letters, Vol. 23, Issue 10, pp. 739-741 (1998)
http://dx.doi.org/10.1364/OL.23.000739


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Abstract

Error diffusion is an important procedure for image and hologram quantization. The spatial distribution of the spectrum of the quantization noise is shaped by a filter function, which depends on the diffusion weights. The customary weights applied during the whole quantization process are optimized to yield the desired filter functions. Stability restrictions limit the optimization process. We suggest optimizing new weights locally after the quantization of each pixel. In this way the eventual occurrence of instabilities can be counteracted and the quality of the filter function improved.

© 1998 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(100.2000) Image processing : Digital image processing
(100.2810) Image processing : Halftone image reproduction

Citation
Frank Fetthauer and Olof Bryngdahl, "Use of error diffusion with space-variant optimized weights to obtain high-quality quantized images and holograms," Opt. Lett. 23, 739-741 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-10-739


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